Tooth-holder for seeders



(No Model.)

G. ST. JOHN.

TOOTH HOLDER POR SEBDBRS.

N0.'3A03,465. Patented Aug.'12, 1884.

HIM

b, are formed.

Narren Arent rtree@ CYRUS ST. JOI-IN, OF HORICON, WISCONSIN.

TOOTH-HOLDER FOR SEEDERS.A

SPECIFCk-FEGN forming part of Letters Patent No. 303,465, dated August 12, 1884.

Application filed April 1'2, 1854. (No model.)

To @ZZ whom t muy conceive.'

Be it known that I, CYRUs S'r. J OIIN, of Horicon, in the county of Dodge, and in the State of XVisconsin, have invented certain new and useful Improvements in Tcoth-IfIolders for Seeders, the.; and I do hereby declare that the following is a full, clear, and exact description thereof. i

My invention relates to holders for secder or cultivator teeth; and it consists in certain peculiarities of construction, as will be fully set forth hereinafter.

In the drawings, Figure l is a perspective view of my device, showing it in position as used, with its teeth stationary. Fig. 2 is a like view of the same as used, with its teeth adapted to slip to avoid an obstruction. Figs. 3 and et show the inner construction of the holding-plates of my device, and Fig. 5 is a vertical cross-section through the center of my tooth-holder.

A A indicate the seeder or cultivator beams, which are made double, the space intervening between their parts being widened at a to allow of the blade of the teeth E E te be received 0r passed between them when the same are used as slipping or revolving teeth. The sides of the seeder or cultivator beam are connected at their front end by being bolted or riveted to the blocks c and c2, the latter being perforated in its upward-extending end to receive the usual chain, a.

To the rear end of the seeder-beams A is attached the tooth-holder, which is composed of the two frictional disks B B and of' the holding-plates C C, held between said disks, both of the plates and disks having a central perforation at b and c to receive the threaded bolt D, by means ot' which and of the fastening-nut D the device is adapted to hold the teeth in the adjustments they may receive. The frictional disks B B are convexed on their outer face, except below their central perforation, b, where an upper iiange, b, and a lower flange,

These flanges project horizontally beyond the edges of the disks, and they extend outward to a common vertical plane, the space between them forming a rectangular groove, in which lit the ends of the double beam A, both being secured together by means of the rivets b b3. The inner faces of the disks B B are concaved, so that their rims b alone bear against the outer faces `of the plates C C. Both disks have a perforation, b5, close to their upper edges, and these perforations coincide with similar perforations, c c2, made at corresponding points of the plates C U, these perforations being designed to receive the stop-pin F, whenever it is desired to use a stationary or fixed tooth, which may 6o be either one of the teeth'E E. The holdingplates C C are made circular, except at the points of insertion of the teeth E E. At such: points the edges of the plates are extended out, as at e e, to strengthen their bearingfaces. On the inner face of the plate C a series of iianges, c3, slightly thinner than the teeth ends, are provided, parts ci' which form the groove or slot cL for the tooth E and the groove or slot c5 i'or the tooth E the circular part of said flange c: serving as the bearingi'ace for the plate C". rFhe teeth. E and E are interchangeable, however, and in whichever of the grooves or slots c c isA set the tooth E, provided with the strengthening-brace e2, said brace will squarely rest against a part of the flange c at c if set in the groove' or slot et, and at cT it' set in the groove or slot c5. In order to keep the holding-plates C C well together, a stud, es, is formed on the inner facey of the plate C, the same to be received in the perforation c, made at a corresponding point of the plate C. lShorter studs c c1l are formed at points ot' this latter plate G corresponding with the upper part oi' the grooves or slots c4 and e5 of the opposite plate, C, the same to iit in perforatiens c et, respectively, made in the upper end of the teeth E E', these studs serving to hold the teeth in place and to prevent them from slipping out of their respective slots when said teeth are used as revolving teeth.

The manipulation of my tooth-holding device varies according to the nature of the ground over which the implement iitted with the said device has to be used. Il the ground be absolutely clear oi' Obstructions, either of the teeth E E may be used as a stationary tooth. This will be effected by first bringing either ofthe pcrforations c cl of the holdingroo meeting an obstruction in its path.

plates C C in coincidence with the perforations b5 of the frictional disks B B, and then inserting through the coinciding perforations the fastening-pin F. The tooth E in Fig. lis represented as the one in'use, the auxiliary tooth F/ lying in between the sides of the beam A. Should in such a case an obstruction be met unexpectedly, the driver willv be enabled to overcome the same by drawing out the pin F and by slightly unloosening the nut D. The teeth will then act as revolving or slipping teeth. The tooth E will be carried backward until it is raised sufficiently to pass over the obstruction, while, the tooth E being brought in the position previously occupied by the tooth E, the perforations cl of the holdingplates C C will coincide with the perforation b5 of the frictional disks B B. The driver will then insert the fastening pin F in the coinciding perforat-ions, causing the tooth F] to act now as the stationary working-tooth. 'Ihe tooth E may be brought back to its position, as shown in Fig. 1, when the implement has reached the headlaud. V

When the implement is used over ground where obstru CtiOns-such as stones, stumps, or the likeare to be met, the pin F is taken out of its place at b, and the nut D is acted upon by a common key until the friction between the rims b4 of the frictional disks BB and the outer faces of the holding-plates C C is sufficient to overcome the resistance of the soil in which the teeth E or E will have to Work, but not so great but that it would be overcome by In this ease the tooth E, as shown in Fig. 2, will slip past the obstruction, and the tooth E will thereby come down to take its place.

I have shown the flange c as continuous; but, instead, I may cast the plate C with a scries of projections, the sole object being to insure proper bearingsurt'aee on this plate for the other plate, C.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a seeder or eultivator, a toothholder having central plates, substantial] y as described, wherein the teeth are held in position, and frictional disks attached to the end of the seeder or cultivator beams, by means of which and of a bolt passing through the center of both plates and disks and carrying a fasten ing-nut the working-tooth is adapted to slip when striking an obstruction, the same being replaced in the ground by an auxiliary tooth, substantially asset forth.

2. In a seeder or cultivator, in combination with a beam made in two parts, and having the intervening space a for the passage ofthe tooth blade or point, the frictional disks B B, having flanges b b2, wherein fit the ends of the beam A, and the rivets b b3, substantially as shown and described, and for the purpose set forth.

8. In a tooth-holder, in combination with the beams A and teeth E E', the holding-plates C G', having flanges c c, forming the grooves c c5, substantially as shown and described, and for the purpose set forth.

4. In a tooth-holder, in combination with the beams A A, the disks B B', and bolt D, having fastening-nut D', the holding-plates C C', having iianges c ci", studs om and c of plate C', and the perforated shanks of the teeth. E E', substantially as shown and described, and for the purpose set forth.

5. In a tooth-holder, in combination with the beams A A, the disks B B, having the perforations b5, and the plates G C', having coinciding perforations c c2 and fastening F, substantially as shown and described, and for the purpose set forth.

6. In a seeder or eultivator, in combination with the beams A A, the frictional disks B B', having the fianges b b, adapted to receive the ends oi'said beams, connected therewith by suitable rivcts, b bi", substantially as shown and described, and for the purpose set forth.

7. In atooth-holder for seeders or cultivators, the plates C C, having flanges c, forming grooves e c5, adaptedto receive the teeth E E', in combination with the frictional disks B B', substantially as shown and described, and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set :my hand, at Horicon, in the county of Dodge and State of NViseonsin, in the presence of two witnesses.

CYBUS ST. JOHN.

Vitnesses:

GOLDEN A. HART, Louis Drn'rz. 

